Yangzhou Weiyang District Government LED Display Inquiry Procurement Announcement



Title Name: LED Display Inquiry Purchase Announcement

Tender No.: WYZC2009X-010

Announcement date: March 22, 2009

Deadline: March 24, 2009

Tendering Agency: Yangzhou Oriental Lily Garden Primary School

Provinces and cities: Jiangsu Province - Yangzhou City

Content: The Weiyang District Government Procurement Center shall purchase the following goods, please quote the following form and please note the following:

1. All quotes are in RMB.

2. The quotation should be sealed and stamped at 14:30 pm on March 22, 2009 and sent to the government procurement center of Weiyang District, Yangzhou City. It will not be accepted after the deadline.

3. Please fill in all the items that should be filled out including “arrival time” and “combined count”, otherwise it will be treated as a waste order.

4. The supplier of the transaction must pay the performance bond and the amount will be refunded after the completion of the contract, without interest.

5. The supplier shall provide the original manufacturer's authorization. If the supplier provides fake, fraudulent, fake or inferior commodities, it shall not enter the Yangzhou government procurement market within 3 years and shall be punished according to the provisions of the Government Procurement Law.

Display parameters: indoor Ф 3.75 monochrome LED display

Serial number item video indicator

1 single point diameter Ф 3.75

2 single point spacing 4.76mm

3 luminous dots color red

4 luminous tube origin Taiwan Guanglei Guangjia

5 unit board size 304mm × 152mm

6 unit board points 64×32

7 pixel density 44320 points / m2

8 driver devices use LED dedicated driver devices

9 visible distance 5 ~ 20m

10 best viewing angles of 120 degrees, vertical 45 degrees

11 brightness adjustment mode software adjustment 8 levels adjustable

12 working environment temperature: -20 ° C ~ +50 ° C humidity 20% ~ 80%

13 working voltage AC220V±10% 50HZ

14 maximum power 550W

15 uniformity pixel intensity, uniform brightness of the module

16 scanning frequency ã„’180 frames / sec

17 refresh rate ã„’ 120 frames / sec

18 screen body weight 30kg/m2

19 mean time between failures 10,000 hours

20 service life 100,000 hours

21 out of control rate < one ten thousandth

22 flatness 任意0.5mm between any adjacent pixels; module stitching gap <1mm

23 data transmission mode asynchronous control

24 effective communication distance ã„‘100m

25 software LED universal playback software

Company Name: Weiyang District Government Procurement Center Contact:

contact number

Address: 3rd floor, 80m north of the administrative center of Weiyang District, No. 1 Pingshantang Road




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USB3.0 provides a standard interface for all kinds of devices that are connected to PCS or audio/high-frequency devices.The theoretical transmission speed is up to 5Gbps. HUB is commonly known as a hub, which is used to connect multiple computers or network devices in a network using a star topology. The USB 3.0 Hubs is an upgrade of the USB 2.0 Hubs. The transmission rate of the USB2.0 is 480Mbps, and the transmission rate of the USB3.0 is 5Gbps. The maximum transmission speed is 10 times that of the USB2.0, and the transmission speed is faster.

The USB 3.0 hub provides a quick and easy way to connect all the peripherals you use on your desktop. You can connect 2 external monitors, gigabit Ethernet ports, headphones/speakers, USB printers and scanners, keyboards, mice and other peripherals with a single USB 3.0 cable to your computer for up to 5Gbit/s external storage access (10 times faster than USB 2.0). USB HUBS can do split, but not evenly. If, as the subject says, you only have two devices, and the two devices are transmitting at the same time and taking up as much bandwidth as possible, then you end up with two devices each taking up 50% of the bandwidth. Due to the fast theoretical speed of USB3.0, even if divided into four parts, the theoretical bandwidth of each port is still as high as 1Gbps, and the number of converted bytes is close to 100MB/s, which is still a very high bandwidth.


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